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6 ways to prevent chimney leaks problems

3 min read
chimney leaks

6 ways to prevent chimney leaks problems

Last Updated on September 3, 2021 by Jonathan Lopez

With appropriate maintenance and care, chimney leaks can be avoided. If you deal with leak issues before they actually develop, you will keep your home from sustaining costly damage that can even cause a crumbling chimney masonry that can only be rebuilt. A chimney leak can be caused by a few different factors. Here in this topic, we will cover most of the causes of chimney leaks.


Your chimney should be checked every spring for flashing. You should replace any loose, damaged, or missing flashing. Caulk should be applied to small cracks and seams. It may be necessary to replace the entire flashing if there is more extensive damage. You should ensure that you have the correct type of flashing installed if your roof is being replaced.

Crumbled masonry chimney

If you find any loose, cracked, or chipped bricks, you should have them fixed. A professional may be necessary to repair large chunks of missing mortar or loose bricks if there is substantial damage. It is possible to fill in more minor cracks with crack filler. According to Atlantic brick & stone blog crumbling masonry chimney is one of the major signs of chimney leak. So a crumbled masonry chimney might need a complete rebuild.

Inspect water seal

When you have finished making repairs or had someone make the repairs for you, wet the chimney using a hose or a bucket. Getting further water damage may be a concern if the water is quickly absorbed and areas turn dark. Make sure your chimney is waterproofed with a water repellent designed to stop masonry chimney leaks.

Crown inspection

Usually, the piece of metal placed around your chimney’s flue is called the crown. You can compare it to the roof of your chimney. For chimney leak prevention, you might need to have a professional replace the broken or loose parts. In most cases, you can repair a cracked crown that is still solid before the problem gets worse.

Interior inspection

Utilize a bright light to inspect the interior of your chimney flue. Inspect the system for obstructions, soot, and creosote buildup. A professional should always check and clean your chimney every year, even if you can spot apparent problems yourself. There are things that a professional might notice that you don’t see.

Flue Cap installation

Using these covers, you can protect the openings in your flue. Water, debris, or even animals can create chimney leaks if they are not correctly installed. If improperly installed or maintained, a cap can have an adverse effect on the updraft of your chimney. However, it can also keep your chimney protected and ensure it lasts a long time.


It is recommended that you have your chimney evaluated annually by a chimney service provider. In addition to causing property damage estimated at $200 million a year, chimneys that are unsafe can cause severe injury or even death.

The problem of chimney leaks can be avoided if you have your chimney inspected annually. Having your chimney swept annually will allow a professional to discover problems in their early stages. Unattended minor issues can grow in magnitude and may have to be repaired at a high cost if left unattended.

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